i would like tohave ohm's explained to me.

How do i get my sub and amp to both be "set" for whatever ohm(the same)? can the ohm your sub runs at be changed? do amps play anypart in ohm's? what is the technical definition of ohm's? i think im to nderstand that it is how the sub pulls its power, or something. and what in the hell is this tuff i hear about building boxes with levels. ie: a seventh level box or sumpin like that. I am super interested and would like to know anything pertaining to any of this! I am tryin to figure how to compose my next system. i am lookin for one sub, and one amp! want at least 100-125 decibles and i want it to run at a constant 1- 1/2 ohm's. but im not sure what that actually means! help, and thanks in advance

 

i see yall lookin at it! pleese help me!

 

Read

The above is a VERY informative website that will answer most of your questions. For all intensive purposes, you cannot change the impediance (ohm) of a sub or any other type of driver.

However, certain subs come in special voice coil configurations to allow for multiple wiring options. These are most commonly dual voice coil (DVC), and single voice coil (SVC).

Example:
- If you have a 4 ohm SVC driver, it can only be wired to 4 ohms. What good is this if you have an amp that puts out max power at 2 ohms? This is where DVC drivers come into play. If you have a 4 ohm DVC (each coil is 4 ohms) you will be able to wire it into a 2 ohm load, or an 8 ohm load. This way you can take advantage of the amp's max power.

It's not a very good explination, but it's a start. Hopefully someone else will add to it.

Here are some more informative links:
Ohm's Law
The whole 12Volt car audio section
Gain Setting
Subwoofer DIY page (Boxes)
Wiring Subs

 

I'm not going to go into the really technical side of it...b/c i don't really know it

But basically, ohm load is resistance. The lower the ohm load, the higher the current. For a more tech explaination click the link in my sig. Those guys'll give you a few pages of Ohm's Law theory...

 

to both of yall, thanks. it is the starting point io needed!

 

ohms = resistance
ohms is the measurement of the amount of resistance for current to travel from point a to point b

the easiest way to do this is almost all car audio is 4 ohms (except some subs and speakers)...most car audio amps are 4 ohms or 2 ohms or 1 ohms stable blah, blah, blah....if you hook 2 4 ohms speakers together in series it will make a 8 ohm connection to the amp...if you hook the same speakers up in parrel they will be 2 ohm...(series is +//-+//-....parrel is ++//--)
ohms plays a part when setting up the speaker configuration say you have a set of (2) 2 ohm dvc subs and you wanted to run them at 2 ohms on your amp(as long as the amp is 2 ohms stable) you would have to run them is a series//parrel the configuration...hopefully this helps

what are you trying to accomplish?

the link to splbassx is a good site with alot of good guys willing to help


Modified by xXxS_SxXx at 3:35 PM 6/13/2003

 

WOW, i am copletely confused and my head hurts. But i will figure this out! anybody elses comment is appreciated!

 

Like xXxS_SxXx asked, what are you trying to accomplish?

Check out http://www.caraudioforum.com also.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tha Big EZ &raquo;</TD></TR><TR><TD CLASS="quote">i am lookin for one sub, and one amp! want at least 100-125 decibles and i want it to run at a constant 1- 1/2 ohm's.
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to be honest im not even sure that can be done with a 1 sub and 1 amp config

 

Purchase "The loudspeaker cookbook".

You have a big learning curve ahead of you.

 

LOL. I just read the post again. 100-125 db, in car is easy.

Almost any car sub sealed with 100 watts will break 100 db.

If you need 1 ohm then get a dual 2 ohm sub, and run the vc's in parallel.

But I have a question for you. Why do you want to run 1-.5 ohms? What amp do you have? If you do this wrong 1 ohm will smoke many amps.

 

i am tryin to accomplish my feat of knowing a little bout everything! but i want one sub, one amp, and i want a 1 or half ohm stable system. will i need another battery or a cap. hell, im trying to do everything all at once! hopefully by accomplishing this i will poof,... become enrgy! Nah just kiddin. lovin the comments! Keep em' flowin!

 

Seriously, go to the link in my sig. There's A LOT to learn there. Several of the people on that forum have competition vehicles and they are quite knowledgeable(sp?) and friendly. There are also members of that forum that work in/run car audio shops and can get you where you want to be on whatever budget. Check it out.

 

Did someone tell you that being 1 ohm stable is cool or something? With a single sub many amps will put over 1k watts into 2 ohms. Many amps that are 1 ohm stable, like the jbl 1200.1, don't make more power at that load. They do get hotter though.

Tell us a BUDGET, and if you want sound quality, loudness, or both. And we can give and a single sub and amp recommendation.

 

yeah, my single old RF punch 10" and jensen amp was like 123db.

 

I didnt check out the links, I am sure they are informative, but just to clear something up, ohms as it relates to speakers and amplifiers is an impedance, a frequency dependant resistance, if you wire speakers in series the impedance adds together 4ohm + 4ohm = 8ohm load, in paralell they divide 4ohm to 4ohm = 2ohm. basic car audio 101... have fun learning